In the following test ```def test pipeline assets result = m dagster #ask-community

In the following test: ```def test_pipeline_assets...

Fred Benton

05/15/2023, 2:26 PM

In the following test:

Copy code

def test_pipeline_assets():  
     result = (
        materialize_to_memory(
            assets=[get_stuff],
            resources={
                "conn": redshift_connection,
                "pipeline_configuration": {
                    "target_district": "BLORG",
                    "source_schema": "FOO",
                    "output_schema": "BAR",
                },
            },
        ),
    )
    assert result.success

I get the error: AttributeError: 'tuple' object has no attribute 'success' what attribute of result should I use instead of success?

daniel

05/15/2023, 2:39 PM

Hi Fred - this looks like a Python gotcha to me that I've been bit by several times before- you're actually setting

result

to a Python tuple with a single element

daniel

05/15/2023, 2:39 PM

(Because of stray parentheses and commas)

Fred Benton

05/15/2023, 2:40 PM

Can you make a quick recommendation?

Adam Bloom

05/15/2023, 2:40 PM

Copy code

def test_pipeline_assets():  
     result = materialize_to_memory(
        assets=[get_stuff],
        resources={
            "conn": redshift_connection,
            "pipeline_configuration": {
                "target_district": "BLORG",
                "source_schema": "FOO",
                "output_schema": "BAR",
            },
        },
    )
    assert result.success

try that 🙂

🙏 1

Adam Bloom

05/15/2023, 2:42 PM

The syntax you had before with an extra set of parenthesis can be used to split long lines into multiple lines, especially with chaining (I use it a lot in sqlalchemy), but that last

is what was converting it to a tuple instead.

Fred Benton

05/15/2023, 2:42 PM

Thank you very much

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